Modified Parareal Algorithm for Solving Time-Dependent Differential Equations
Modified Parareal Algorithm for Solving Time-Dependent Differential Equations
复制标题
求解时态微分方程的改进拟实数算法
DOI:
10.11159/eee21.110
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Muknahallipatna, S.
中科院分区:
文献类型:
--
作者:
Lakshmiranganatha, S.;Muknahallipatna, S.
Parallel algorithms are implemented to compute the solutions of partial differential equations and ordinary differential equations of complex dynamical systems to achieve near real-time solutions. One of the parallel algorithms widely implemented is the Parareal algorithm to solve time-dependent differential equations for various scientific applications. Parareal algorithm has shown promising speedups in achieving near real-time solutions using accelerators. However, it has been observed that the sequential predictorcorrector step of the Parareal algorithm impacts the computational performance. This paper analyses the Parareal algorithm and proposes modification to the predictor-corrector step of the Parareal algorithm to exploit data parallelism more and reduce the computation time. The modified algorithm is implemented to solve two systems of interdependent ODEs. The numerical accuracy and performance analysis of the modified algorithm is shown to be same as the original Parareal. The performance analysis of the modified algorithm on two accelerator computing architectures: Intel Xeon Phi CPU and Graphical processing units with OpenMP, OpenACC, and CUDA programming models are presented. The modified algorithm demonstrates performance improvement ranging from 1.2 x-2x with respect to the original Parareal algorithm.
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DOI:
--
发表时间:
2016
期刊:
IEEE PES Innovative Smart Grid Technologies Conference Europe
影响因子:
--
作者:
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通讯作者:
K. Sun
影响因子:
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DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
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DOI:
10.4236/jcc.2021.92003
发表时间:
2021
期刊:
Journal of Computer and Communications
影响因子:
--
作者:
Lakshmiranganatha, Sumathi;Muknahallipatna, Suresh S.
通讯作者:
Muknahallipatna, Suresh S.
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Allan S. Nielsen
通讯作者:
Allan S. Nielsen